"What am I thinking of when I say this? True opinions. For true opinions, as long as they remain, are a fine thing and all they do is good, but they are not willing to remain long, and they escape from a man's mind, so that they are not worth much until one ties them down by giving an account of the reason why. And that, Meno my friend, is recollection, 3 as we previously agreed. After they are tied down, in the first place they become knowledge, and then they remain in place. That is why knowledge is prized higher than correct opinion, and knowledge is prized higher than correct opinion, and knowledge differs from correct opinion in being tied down." 4

If true opinions are acted upon, they will yieldvirtuous actions just as often as knowledge will. According to Socrates, "Correct opinion is then neither inferior to knowledge nor less useful in directing actions ... " 6